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304 pages, Paperback
Published November 12, 2021
The study population was a cross section of people from the Memory and Aging Project (MAP) in Chicago, who passed away between 2004 and 2013. Diet information was collected regularly as part of the MAP study, and out of 554 deceased participants, about half (48.4 percent) had brain autopsies. Not surprisingly, the researchers found that eating more seafood did indeed lead to higher levels of mercury in the brain. Surprisingly, when it came to Alzheimer's disease, eating more than one seafood meal per week was associated with healthier brains even with higher levels of mercury in the brain. The neuritic plaques and tangles were more sparse in the fish eaters than those who didn't eat fish, who tended to have more severe and widespread tangles and a higher concentration of brain plaques.